Oscillating feed tray in a ramming device for a gun



1 the cartridges from the feeder.

2,849,924 Patented Sept. 2, 1958 OSCILLATING FEED TRAY IN A RANIMINGDEVICE FOR A GUN Robert G. Nutting, Glenview, and Henry M. Pernini,

4 Claims. (Cl. 89-33) Our invention relates to a bolt operated gun andmore particularly to a ram device therefor.

The gun is provided with a barrel, a receiver with an adjacent feedthroat, a bolt biased to a closed position therein to retain thecartridges in the barrel for discharge and a spring-biased buffer forengagement with the bolt. The bolt is disposed for reciprocal operationand a feeder on the receiver supplies successive cartridges to a rammingposition in the throat adjacent the path of the bolt responsive to thedischarge.

It is an object of our invention to provide the gun with a device forconducting the cartridges to the barrel from the ramming position.

Another object of our invention is to provide a ramming device having apivotable member for directing the cartridges into the barrel.

Other aims and objects of our invention will appear I from the followingexplanation thereof.

'In carrying out our invention, a tray pivoted in the throat isspring-biased to a normal position for receiving The tray includes apair of spring-biased detents for retaining cartridges therein and a camfor engagement with the bolt to pivot the cartridges into alignment withthe breech end of the barrel responsive to the reciprocal operation. A.lever pivoted in the throat is coupled at respective ends thereof to abuffer and a rammer for propelling the cartridges into the barrelresponsive to engagement of the bolt with the buffer.

For a more complete understanding of our invention reference is directedto the following description and the accompanying drawing in which:

Fig. 1 is a partial elevational cross-sectioned view of a gunincorporating our invention with the bolt in the closed positionthereof;

Fig. 2 is a similar view with a cartridge enclosed in the trough;

Fig. 3 is a similar view of the point of ramming; and Fig. 4 is a viewalong line 4-4 of Fig.2.

"Accordingly, a gun 12 with a receiver 14 includes a barrel 16 forchambering cartridges. A bolt 20 is conventionally biased to a closedposition to retain cartridges 22 in barrel 16 for discharge and disposedfor slidable reciprocation in tracks 24 of receiver 14 responsive to thedischarge. Buffer 26 is mounted for longitudinal reciprocation inreceiver 14- and is biased by a spring 27 to a forward position forengagement by bolt 20 to absorb the recoil energy therein. Theengagement of bolt '20 with buffer 26 causes rearward movement thereof.

'which receive therebetween successive ones of the cartridges 22 movedby a feeder 34 to a feed position parallel to the axis of barrel 16responsive to the discharge of the gun. A detent 36 is pivotally mountedon each of the sides of tray 28, and such detents are spring-biasedagainst the upper sides of the cartridge 22 in such tray to preventdisplacement of such cartridge when the tray is pivoted. A cam 38 isdisposed on tray 28 for engagement by bolt 20 during the rearwardstrokes thereof to pivot the tray so as to align the cartridge 22therein into alignment with the breech opening in barrel 16, and spring39 biases the tray to a longitudinal position for receiving thecartridges from the feeder.

A lever 40 pivoted at 42 is pivotally connected at the opposite ends 44and 46 thereof to buffer 26 and a rammer 48 respectively. A slot 50 isprovided in rammer 48 to receive pivot 30 and rammer 48 is disposed topropel cartridges 22 from tray 28 into barrel 16 responsive toengagement of bolt 20 with buffer 26.

A spring-biased claw 52 is provided on bolt 20 for extraction of casesof cartridges 22 from barrel 16 and the cases engage an ejector stop 54in the receiver for rotation thereof from the claw responsive to thereciprocal operation. Stop 54 also limits rotation of tray 28.

Although a particular embodiment of the invention has been described indetail herein, it is evident that many variations may be devised withinthe spirit and scope thereof and the following claims are intended toinclude such variations.

We claim:

1. In a gun including a receiver, a barrel secured thereto disposed tochamber cartridges and provided with a breech opening, a bolt biased toa battery position to retain the cartridges in the barrel for dischargeand disposed for axial reciprocation in rearward and forward strokesresponsive to the discharge, a buffer disposed to slide axially in thereceiver and spring-biased for engagement with the bolt in the rearwardstrokes to transmit energy thereof to the receiver, and a feeder tosuccessively supply the cartridges to a feed position responsive to thedischarge, a ramming device comprising a tray mounted on the receiverfor pivotal movement between a receiving position corresponding to thefeed position for receiving cartridges successively supplied by thefeeder thereto and a ramming position wherein the cartridges received bysaid tray are axially aligned with the breech opening, means for biasingsaid tray to said cartridge receiving position, cam means on said trayengageable by the bolt during the rearward strokes thereof for pivotingsaid tray to the ramming position, a ram movable against the bases ofthe cartridges received by said tray for propelling the cartridges intothe barrel breech, and lever means disposed between said ram and thebuffer for transferring the rearward movement of the buffer when engagedby the bolt during recoil strokes thereof to said ram.

2. A ramming device as in claim 1 with said tray provided with parallelsides and detents respectively pivoted thereon for enclosure of thecartridges, said detents being spring-biased to retain the cartridges insaid tray for the displacement between the cartridge receiving andramming positions.

3. A ramming device as in claim 1 with a pin for pivotally mounting saidtray to the receiver, and said lever means being provided with a leverpivoted on the receiver and pivotally secured to the buffer, and saidram being pivotally secured to said lever and provided with a slothaving slidable engagement with said pin during actuation of said ram.

4. A ramming device as in claim 1 with an ejector References Cited inthe file of this patent UNITED STATES PATENTS Dawson et al. Mar. 6, 1900Noble June 10, 1902 Methlin Mar. 18, 1930 FOREIGN PATENTS Italy Aug. 22,1935

